Control By A/C Amp.

Low Temperature Protection Control

When intake sensor detects that front evaporator fin temperature is 2.5°C (37°F) or less, A/C amp. requests ECM to turn the compressor OFF, and stops the compressor.

When the front evaporator fin temperature returns to 4.0°C (39°F) or more, the compressor is activated.

Fig 1: Identifying Compressor Control ON-OFF Diagram

Courtesy of NISSAN NORTH AMERICA, INC.